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10 Cards in this Set
- Front
- Back
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LIGHT
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LIGHT IS A FORM OF ENERGY WHICH HELPS US TO SEE THINGS AROUND US
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OBJECTS
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*LUMINOUS OBJECTS *NON LUMINOUS OBJECTS |
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LUMINOUS OBJECTS
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*EMIT LIGHT OF THEIR OWN *EG- SUN AND TUBELIGHT |
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NON LUMINOUS OBJECT
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*DO NOT EMIT LIGHT OF THEIR OWN *RATHER REFLECT THE LIGHT FROM LUMINOUS OBJECTS *EG- MOON |
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PROPERTIES OF LIGHT
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*LIGHT TRAVELS IN A STRIGHT LINE *LIGHT DOES NOT REQUIRE ANY MATERIAL MEDIUM TO TRAVEL *LIGHT IS AN ELECTRO MAGNETIC RADIATION *THE SPEED OF LIGHT IS 3 X (10)8 M/S *WHITE LIGHT COMPRISES OF SEVEN COLOURS WIDELY KNOWN AS VIBGYOR |
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IMPORTANT TEARMS RELATED TO REFLECTION OF LIGHT
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1. INCIDENT RAY 2.REFLECTED RAY 3.NORMAL 4. POINT OF INCIDENCE 5.ANGLE OF INCIDENCE 6. ANGLE OF RELFELCTION |
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INCIDENT RAY
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THE LIGHT RAY WHICH FALLS ON A REFLECTING SURFACE US CALLED INCIDENT RAY. |
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REFLECTED RAY
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THE RAY OF LIGHT WHICH BOUNCES BACK OR DENT BACK BY THE REFLECTING SURFACE US CALLED REFLECTED RAY |
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NORMAL
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IT IS A LINE DRAWN PERPENDICULAR (AT RIGHT ANGLE) TO THE REFLECTING SURFACE AT THE POINT OFINCIDENCE
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